CN113202441A - Automatic control system and method for electric control liquid of continuous oil pipe equipment - Google Patents
Automatic control system and method for electric control liquid of continuous oil pipe equipment Download PDFInfo
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- CN113202441A CN113202441A CN202110476000.9A CN202110476000A CN113202441A CN 113202441 A CN113202441 A CN 113202441A CN 202110476000 A CN202110476000 A CN 202110476000A CN 113202441 A CN113202441 A CN 113202441A
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- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 90
- 239000007924 injection Substances 0.000 claims abstract description 90
- 230000002265 prevention Effects 0.000 claims abstract description 51
- 239000003921 oil Substances 0.000 claims description 41
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 238000011010 flushing procedure Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides an automatic control system and a method for an electric control liquid of coiled tubing equipment, which comprises a PDB, a CCB, an HMI (human machine interface), an Injector Box, a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil tube roller control system, a blowout prevention Box control system and a manual operation system, wherein the automatic control system for the electric control liquid is divided into an automatic control system and a manual control system, can be selected according to requirements, and is more convenient and reliable to operate and control; parameter information fed back by the HMI, the CCB, the HMI, the Injector Box, the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system, the blowout prevention Box control system and the manual operation system is collected and analyzed through the PDB, parameters of all modules can be optimized and matched through the CCB, the operation is simpler and more convenient, the system operation is more reliable, and the stable and continuous operation of continuous oil pipe equipment is ensured.
Description
Technical Field
The invention relates to the field of coiled tubing equipment, in particular to an automatic control system and method for an electric control liquid of the coiled tubing equipment.
Background
The operation and control of coiled tubing operation equipment in use all over the world today is controlled by an operator operating the coiled tubing work-off site at a construction site. With the continuous expansion of the application field of the coiled tubing, coiled tubing equipment is increasingly applied in the fields of gas injection oil displacement of oil fields and gasification coal mining fluid injection of coal mines. Because of the particularity of the process technology in the field, fluid injection is generally realized by simultaneously injecting a plurality of wells, each injection well needs a set of coiled tubing tripping equipment to stand by at a well head, and when parameters such as the temperature, the pressure and the like of the well in the process of injecting the fluid change to the coiled tubing needing to be lifted (placed), a ground technician needs to operate the coiled tubing tripping equipment at the well head in a short time to perform the tripping operation of the coiled tubing in the well. According to the traditional coiled tubing equipment operated by people locally, each set of coiled tubing equipment of each injection well needs to be attended by people in turn to monitor and control the running of the coiled tubing equipment, the equipment investment cost is high, operators are attended by many persons, the management difficulty is high, the equipment running cost is high, and the economic benefit is poor.
Chinese patent CN108708681B "equipment for operating and controlling coiled tubing operation" relates to the operation of pulling up and down coiled tubing during remote centralized remote control operation injection, and is a centralized monitoring method for multiple sets of coiled tubing equipment for multi-button fluid injection wells.
Disclosure of Invention
The invention mainly aims to provide an automatic control system and method for an electric control liquid of a continuous oil pipe device, and solves the problems that the centralized monitoring of all devices of the continuous oil pipe device is realized, and the continuous and stable operation of the devices is ensured.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the automatic control method comprises the following steps of PDB, CCB, HMI, Injector Box, a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system, a blowout prevention Box control system and a manual operation system, wherein the automatic control method of the electric control liquid of the continuous oil pipe equipment comprises the following steps:
s1, arranging an electric control liquid automatic control system on the coiled tubing equipment main body, wherein the electric control liquid automatic control system is parallel to the manual control system;
s2, in the operation process, hanging a chassis for power take-off, wherein the electric control liquid automatic control system controls the normal operation of a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system, a blowout prevention box control system and a manual operation system through chassis engine operation parameters, injection head clamping and tensioning parameters, pipe light and pipe heavy parameters, oil pipe roller operation parameters and pipe arranger movement parameters which are set by the HMI;
and S3, the PDB acquires parameter information fed back by the HMI, the CCB, the Injector Box, the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system, the blowout prevention Box control system and the manual operation system, and optimizes and matches the parameters of each module through the CCB.
In a preferred scheme, the injection head driving system comprises an electric proportional plunger pump, an electric proportional overflow valve, a flushing valve, a filter, a variable motor and a first brake;
the variable motor is arranged on two sides of the injection head, the variable motor drives the injection head chain, and the first brake brakes and releases the brake of the injection head.
In the preferred scheme, the electric proportional plunger pump is connected with the variable motor to form a closed loop, the flushing valve and the filter are connected in series on two sides of the closed loop, and the electric proportional overflow valve is connected in parallel on one side of the electric proportional plunger pump;
the electric proportional plunger pump and the electric proportional overflow valve are automatically controlled by the CCB to control the pressure and the speed of the injection head.
In the preferred scheme, the injection head auxiliary control system comprises an auxiliary pump, a speed regulating valve group, an electric proportional pressure reducing valve, a pressure reducing valve, an electromagnetic directional valve, a pressure sensor and a pressure retaining valve.
In the preferred scheme, the auxiliary pump provides hydraulic power for motor gear shifting, chain clamping, chain tensioning, roller braking and injection head braking through a speed regulating valve group, and each pipeline is provided with a pressure sensor;
an electric proportional pressure reducing valve connected in series is arranged between the speed regulating valve group and the motor, and the electric proportional pressure reducing valve switches the discharge capacity of the injection head motor, so that stepless speed regulation of the injection head motor is realized;
a pressure reducing valve 10 and an electromagnetic reversing valve which are connected in series are arranged between the speed regulating valve group and the roller brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve reverses, so that the roller brake and the brake release are realized;
a pressure reducing valve 10 and an electromagnetic reversing valve which are connected in series are arranged between the speed regulating valve group and the injection head brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve reverses, so that the injection head brake and the brake release are realized;
an electric proportional pressure reducing valve and a pressure retaining valve which are connected in series are arranged between the speed regulating valve group and the chain, and the tensioning pressure of the injection head chain is controlled through the electric proportional pressure reducing valve and the pressure retaining valve;
an electric proportional pressure reducing valve and a pressure retaining valve which are connected in series are arranged between the speed regulating valve group and the chain clamp, and the clamping pressure of the injection head chain is controlled through the electric proportional pressure reducing valve and the pressure retaining valve.
In the preferred scheme, the injection head brake and the roller brake have logic control, and the injection head can be controlled only after the brakes are released simultaneously;
the chain clamping is divided into an upper path control, a middle path control and a lower path control, the three path control is provided with an independent pressure retaining valve, and the chain clamping can be controlled manually or automatically.
In the preferred scheme, the blowout prevention box control system comprises a constant-pressure variable pump, a safety valve, an energy accumulator, a needle valve, an electric proportional pressure reducing valve, a switch electromagnetic directional valve and a pressure maintaining electromagnetic valve.
In the preferred scheme, two blowout prevention boxes are provided, the two blowout prevention boxes provide hydraulic power through a constant-pressure variable pump, so that the two blowout prevention boxes are opened or closed, and the two blowout prevention boxes are independently controlled to enable the two blowout prevention boxes to not work simultaneously;
an electric proportional pressure reducing valve and a switch electromagnetic directional valve which are connected in series are arranged on control pipelines of the constant-pressure variable pump and the two blowout prevention boxes, the switch electromagnetic directional valve controls the blowout prevention boxes to be loosened or clamped through electrifying or powering off, and a pressure maintaining electromagnetic valve is also arranged on a pipeline which controls the blowout prevention boxes to be clamped so as to maintain the pressure of the blowout prevention boxes in a clamped state;
the constant pressure variable pump is provided with a safety valve, an energy accumulator and a needle valve on a control pipeline of the two blowout prevention boxes, the energy accumulator can provide extra power for the system under the condition that the constant pressure variable pump fails, the needle valve unloads the system, and the safety valve protects the system from overpressure.
In a preferable scheme, the oil pipe roller control system comprises an electric control variable plunger pump, an electric proportional overflow valve, a filter, a flushing valve, a roller motor and a second brake.
In the preferred scheme, the electric control variable plunger pump is connected with the roller motor to form a closed loop, the filter and the flushing valve are connected in series at two sides of the closed loop, and the electric proportional overflow valve is connected in series between the outlet of the electric control variable plunger pump and the filter;
the electric proportional overflow valve is used for adjusting the working pressure of the system, the filter is used for filtering hydraulic oil on loops on two sides, and the flushing valve is used for replacing part of hot oil to reduce the temperature of the hydraulic oil of the system.
The invention provides an automatic control system and method for an electric control liquid of a continuous oil pipe device, which have the beneficial effects that:
1. the electric control liquid automatic control system is divided into two systems, namely an automatic control system and a manual control system, can be selected according to needs, and is more convenient and reliable to operate and control;
2. the system parameters are intensively set through the HMI, so that a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system and a blowout prevention box control system can be ensured to normally operate;
3. parameter information fed back by the HMI, the CCB, the Injector Box, the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system, the blowout prevention Box control system and the manual operation system is collected and analyzed through the PDB, and parameters of all modules can be optimized and matched through the CCB, so that the operation is simpler and more convenient, and the system operation is more reliable;
4. the injection head driving system and the injection head auxiliary control system can accurately control the pressure and the speed of the injection head, the system is stable and reliable in operation, and the continuous operation of equipment is ensured;
5. the two blowout prevention boxes do not work simultaneously, wherein the energy accumulator can provide power under the condition that the pump fails, so that normal operation is prevented from being influenced due to equipment failure, and stable and continuous operation of the coiled tubing equipment is ensured.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the overall system connection of the present invention;
FIG. 2 is a flow chart of the injector head drive system of the present invention;
FIG. 3 is a control diagram of the injector head drive system of the present invention;
FIG. 4 is a flow chart of the injector head assist control system of the present invention;
FIG. 5 is a control diagram of the injector head auxiliary control system of the present invention;
FIG. 6 is a flow chart of the control system of the blowout preventer cartridge of the present invention;
FIG. 7 is a control diagram of the control system of the blowout preventer cartridge of the present invention;
FIG. 8 is a flow chart of the present invention tubing drum control system;
FIG. 9 is a control diagram of the tubing roller control system of the present invention;
in the figure: an electric proportional plunger pump 1; an electric proportional relief valve 2; a flush valve 3; a filter 4; a variable displacement motor 5; a first brake 6; an auxiliary pump 7; a speed regulating valve group 8; an electro proportional pressure reducing valve 9; a pressure reducing valve 10; an electromagnetic directional valve 11; a pressure sensor 12; a pressure retaining valve 13; a constant-pressure variable pump 14; a safety valve 15; an accumulator 16; a needle valve 17; switching the electromagnetic directional valve 18; a pressure maintaining electromagnetic valve 19; an electrically controlled variable plunger pump 23; an electric proportional relief valve 24; a second brake 25; a drum motor 26.
Detailed Description
Example 1
As shown in fig. 1 to 9, the automatic control system and method for coiled tubing equipment electric control liquid comprises a PDB, a CCB, an HMI, an Injector Box, a chassis engine system, an injection head driving system, an injection head auxiliary control system, a tubing drum control system, a blowout prevention Box control system, and a manual operation system, and the automatic control method for coiled tubing equipment electric control liquid comprises the following steps:
s1, arranging an electric control liquid automatic control system on the coiled tubing equipment main body, wherein the electric control liquid automatic control system is parallel to the manual control system;
s2, in the operation process, hanging a chassis for power take-off, wherein the electric control liquid automatic control system controls the normal operation of a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system, a blowout prevention box control system and a manual operation system through chassis engine operation parameters, injection head clamping and tensioning parameters, pipe light and pipe heavy parameters, oil pipe roller operation parameters and pipe arranger movement parameters which are set by the HMI;
and S3, the PDB acquires parameter information fed back by the HMI, the CCB, the Injector Box, the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system, the blowout prevention Box control system and the manual operation system, and optimizes and matches the parameters of each module through the CCB. According to the method, the HMI display adopts a touch screen, the working modes such as an automatic control mode and a friction mode can be selected, the mode is switched into a manual control mode through a touch key mode, an electric control liquid automatic control system receives HMI information through Ethernet communication and feeds back the communication information of each module to the HMI, a PDB is an input/output module and receives the information fed back from each system, a CCB is a command control module and is responsible for processing the fed back information, feeding back the information to each system through the PDB to execute, and displaying the state through the HMI; the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system and the blowout prevention box control system provide operation instructions, and information fed back by each system is collected through an internal CAN bus and displayed through an HMI; the manual operation system comprises a manual operation rod, can control the rising and falling of the injection head, the traction pressure of the roller, the control pressure of the blowout prevention box, the clamping pressure, the tensioning pressure, the shifting pressure of the injection head motor and the like, is displayed through the HMI, and in the automatic control mode, the automatic control mode stops as long as the operation rod is operated. The Injector Box is responsible for collecting a load sensor, a speed sensor, a well inlet pressure value and a well outlet pressure value on the injection head, the HMI inputs an operation instruction and displays each parameter, and the data acquisition system acquires relevant parameters of field operation.
In a preferred scheme, the injection head driving system comprises an electric proportional plunger pump 1, an electric proportional overflow valve 2, a flushing valve 3, a filter 4, a variable motor 5 and a first brake 6;
the variable motor 5 is arranged on two sides of the injection head, the variable motor 5 drives the injection head chain, and the first brake 6 brakes and releases the injection head.
In the preferred scheme, an electric proportional plunger pump 1 and a variable motor 5 are connected to form a closed loop, a flushing valve 3 and a filter 4 are connected in series at two sides of the closed loop, and an electric proportional overflow valve 2 is connected in parallel at one side of the electric proportional plunger pump 1;
the electric proportional plunger pump 1 and the electric proportional overflow valve 2 are automatically controlled by the CCB to control the pressure and the speed of the injection head. According to the system, the electric proportional plunger pump 1 adjusts the flow of the system, the electric proportional overflow valve 2 controls the pressure of the system, the flushing valve 3 replaces part of hot oil, the hydraulic oil temperature of the whole closed system is reduced, when the continuous oil pipe equipment is automatically controlled, the electric proportional plunger pump 1 and the electric proportional overflow valve 2 are automatically controlled through CCB (computer control bus), namely the pressure and the speed of the starting of an injection head, and the filter 4 adopts an electric transmitter and displays the pressure and the speed through an HMI (human machine interface) when a fault occurs or maintenance is needed due.
In a preferred scheme, the injection head auxiliary control system comprises an auxiliary pump 7, a speed regulating valve group 8, an electric proportional pressure reducing valve 9, a pressure reducing valve 10, an electromagnetic directional valve 11, a pressure sensor 12 and a pressure retaining valve 13.
In the preferred scheme, the auxiliary pump 7 provides hydraulic power for motor gear shifting, chain clamping, chain tensioning, roller braking and injection head braking through the speed regulating valve group 8, and each pipeline is provided with a pressure sensor 12;
an electric proportional pressure reducing valve 9 connected in series is arranged between the speed regulating valve group 8 and the motor, and the electric proportional pressure reducing valve 9 switches the discharge capacity of the injection head motor, so that stepless speed regulation of the injection head motor is realized;
a pressure reducing valve 10 and an electromagnetic reversing valve 11 which are connected in series are arranged between the speed regulating valve group 8 and the roller brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve 11 reverses, so that the roller brake and the brake release are realized;
a pressure reducing valve 10 and an electromagnetic reversing valve 11 which are connected in series are arranged between the speed regulating valve group 8 and the injection head brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve 11 reverses, so that the injection head brake and the brake release are realized;
an electric proportional pressure reducing valve 9 and a pressure retaining valve 13 which are connected in series are arranged between the speed regulating valve group 8 and the chain tensioning, and the tensioning pressure of the injection head chain is controlled through the electric proportional pressure reducing valve 9 and the pressure retaining valve 13;
an electric proportional pressure reducing valve 9 and a pressure retaining valve 13 which are connected in series are arranged between the speed regulating valve group 8 and the chain clamp, and the clamping pressure of the injection head chain is controlled through the electric proportional pressure reducing valve 9 and the pressure retaining valve 13.
In the preferred scheme, the injection head brake and the roller brake have logic control, and the injection head can be controlled only after the brakes are released simultaneously;
the chain clamping is divided into an upper path control, a middle path control and a lower path control, the three path control is provided with an independent pressure retaining valve 13, and the chain clamping can be controlled manually or automatically. From this system, pressure sensor 12 in each pipeline can carry out feedback monitoring to pressure, under coiled tubing equipment automatic control mode, needs realize motor discharge capacity automatically regulated through the CCB according to the speed of setting for, and electricity proportional pressure reducing valve 9 and pressure retaining valve 13 are circular telegram simultaneously and the outage, and after pressure adjustment is good, pressure retaining valve 13 outage, this system is in the pressurize state, protection tensioning system. Under the automatic control mode of the continuous oil pipe equipment, in the light pipe or heavy pipe state, the automatic control of chain tensioning is realized according to a tensioning curve table to prevent the phenomenon of pipe slipping caused by the leakage of a clamping oil cylinder, pressure retaining valves 13 of an upper path, a middle path and a lower path are added, and after the system pressure is set, the three paths of pressure retaining can be manually locked; and under the automatic control mode of the continuous oil pipe equipment, the automatic control of chain clamping is realized according to the clamping curve table.
In a preferred scheme, the blowout preventer control system comprises a constant-pressure variable pump 14, a safety valve 15, an energy accumulator 16, a needle valve 17, an electric proportional pressure reducing valve 9, a switching electromagnetic directional valve 18 and a pressure maintaining electromagnetic valve 19.
In the preferred scheme, two blowout prevention boxes are provided, the two blowout prevention boxes provide hydraulic power through a constant-pressure variable pump 14, so that the two blowout prevention boxes are opened or closed, and the two blowout prevention boxes are independently controlled to enable the two blowout prevention boxes to not work at the same time;
an electric proportional pressure reducing valve 9 and a switch electromagnetic directional valve 18 which are connected in series are arranged on control pipelines of the constant-pressure variable pump 14 and the two blowout prevention boxes, the switch electromagnetic directional valve 18 controls the blowout prevention boxes to be loosened or clamped through electrifying or powering off, and a pressure maintaining electromagnetic valve 19 is also arranged on a pipeline which controls the blowout prevention boxes to be clamped so as to maintain the pressure of the blowout prevention boxes in a clamping state;
the constant pressure variable pump 14 is provided with a safety valve 15, an energy accumulator 16 and a needle valve 17 on a control pipeline of the two blowout prevention boxes, the energy accumulator 16 can provide extra power for the system under the condition that the constant pressure variable pump 14 fails, the needle valve 17 unloads the system, and the safety valve 15 protects the system from overpressure. According to the system, the electric proportional pressure reducing valve 9 adjusts the working pressure of the blowout prevention box according to the well pressure, the switch electromagnetic directional valve 18 controls the blowout prevention box to be loosened and clamped through power-on and power-off, and the pressure maintaining electromagnetic valve 19 realizes pressure maintaining under the clamping state of the blowout prevention box. When the blowout preventer is clamped, the switch electromagnetic directional valve 18 is not electrified, the electric proportional pressure reducing valve 9 is directly adjusted to control the clamping pressure, the pressure maintaining electromagnetic valve 19 is in an electrified state at the moment, and after the pressure adjustment is finished, the pressure maintaining electromagnetic valve 19 is powered off to realize pressure maintaining; when the blowout preventer is loosened, the electric proportional pressure reducing valve 9 is set at a certain pressure, and then the switch electromagnetic directional valve 18 and the pressure maintaining electromagnetic valve 19 are electrified to realize the loosening of the blowout preventer. When the continuous oil pipe equipment is automatically controlled, the PDB collects the feedback bottom hole pressure, the required control pressure is calculated through the CCB logic, and the blowout prevention box is automatically controlled by adjusting the electric proportional pressure reducing valve 9. The electromagnetic directional valve 11 is used for reversing, and the reversing can be realized only after the electric proportional pressure reducing valve 9 is adjusted to be zero.
In a preferred scheme, the tubing roller control system comprises an electrically controlled variable plunger pump 23, an electric proportional overflow valve 2, a filter 4, a flushing valve 3, a roller motor 26 and a second brake 25.
In the preferred scheme, the electric control variable plunger pump 23 is connected with the roller motor 26 to form a closed loop, the filter 4 and the flushing valve 3 are connected in series at two sides of the closed loop, and the electric proportional overflow valve 2 is connected in series between the outlet of the electric control variable plunger pump 23 and the filter 4;
the electric proportional overflow valve 2 is used for adjusting the working pressure of the system, the filter 4 is used for filtering hydraulic oil on loops on two sides, and the flushing valve 3 is used for replacing part of hot oil to reduce the temperature of the hydraulic oil of the system. According to the system, the oil pipe roller is controlled to be in the oil pipe lifting direction generally, the filter 4 adopts a filtering mode that the outlet of the electric control variable plunger pump 23 is filtered by the filter 4, the oil returned by the roller motor 26 is filtered by the filter 4, and the flushing valve 3 replaces part of hot oil, so that the hydraulic oil temperature of the whole closed system is reduced. When the electrically controlled variable plunger pump 23 works, the pump needs to be forcibly activated in the direction of lifting the oil pipe, and if the pump needs to be driven in the direction of lowering the oil pipe. The system realizes automatic control of the oil pipe roller during automatic control of the coiled tubing equipment, when the coiled tubing equipment is put in, the electric control variable plunger pump 23 only needs to set a certain value in the direction of lifting the oil pipe, and when the coiled tubing equipment is lifted, the displacement and the working pressure of the electric control variable plunger pump 23 are adjusted through the CCB according to the required speed.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The method of the automatic control system of the electric control liquid of the continuous oil pipe equipment is characterized in that: the method comprises the steps of PDB, CCB, HMI, Injector Box, a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system, a blowout prevention Box control system and a manual operation system, wherein the method of the automatic control system of the coiled tubing equipment electric control liquid comprises the following steps:
s1, arranging an electric control liquid automatic control system on the coiled tubing equipment main body, wherein the electric control liquid automatic control system is parallel to the manual control system;
s2, in the operation process, hanging a chassis for power take-off, wherein the electric control liquid automatic control system controls the normal operation of a chassis engine system, an injection head driving system, an injection head auxiliary control system, an oil pipe roller control system, a blowout prevention box control system and a manual operation system through chassis engine operation parameters, injection head clamping and tensioning parameters, pipe light and pipe heavy parameters, oil pipe roller operation parameters and pipe arranger movement parameters which are set by the HMI;
and S3, the PDB acquires parameter information fed back by the HMI, the CCB, the Injector Box, the chassis engine system, the injection head driving system, the injection head auxiliary control system, the oil pipe roller control system, the blowout prevention Box control system and the manual operation system, and optimizes and matches the parameters of each module through the CCB.
2. The automatic control system of the coiled tubing equipment electronic control fluid according to claim 1, characterized in that: the injection head driving system comprises an electric proportional plunger pump (1), an electric proportional overflow valve (2), a flushing valve (3), a filter (4), a variable motor (5) and a first brake (6);
the variable motor (5) is arranged on two sides of the injection head, the variable motor (5) drives the injection head chain, and the first brake (6) brakes and releases the brake of the injection head.
3. The coiled tubing equipment electrical control fluid automatic control system of claim 2, characterized in that: the electric proportional plunger pump (1) is connected with the variable motor (5) to form a closed loop, the flushing valve (3) and the filter (4) are connected in series on two sides of the closed loop, and the electric proportional overflow valve (2) is connected in parallel on one side of the electric proportional plunger pump (1);
the electric proportional plunger pump (1) and the electric proportional overflow valve (2) are automatically controlled by the CCB to control the pressure and the speed of the injection head.
4. The automatic control system of the coiled tubing equipment electronic control fluid according to claim 1, characterized in that: the injection head auxiliary control system comprises an auxiliary pump (7), a speed regulating valve group (8), an electric proportional pressure reducing valve (9), a pressure reducing valve (10), an electromagnetic directional valve (11), a pressure sensor (12) and a pressure retaining valve (13).
5. The coiled tubing equipment electrical control fluid automatic control system of claim 4, characterized in that: the auxiliary pump (7) provides hydraulic power for motor gear shifting, chain clamping, chain tensioning, roller braking and injection head braking through a speed regulating valve group (8), and pressure sensors (12) are arranged in all pipelines;
an electric proportional pressure reducing valve (9) connected in series is arranged between the speed regulating valve group (8) and the motor, and the electric proportional pressure reducing valve (9) switches the discharge capacity of the injection head motor, so that stepless speed regulation of the injection head motor is realized;
a pressure reducing valve 10 and an electromagnetic reversing valve (11) which are connected in series are arranged between the speed regulating valve group (8) and the roller brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve (11) reverses, so that the roller brake and the brake release are realized;
a pressure reducing valve 10 and an electromagnetic reversing valve (11) which are connected in series are arranged between the speed regulating valve group (8) and the injection head brake, the pressure value is set by the pressure reducing valve 10, and the electromagnetic reversing valve (11) reverses, so that the injection head brake and the brake release are realized;
an electric proportional pressure reducing valve (9) and a pressure retaining valve (13) which are connected in series are arranged between the speed regulating valve group (8) and the chain, and the tensioning pressure of the injection head chain is controlled through the electric proportional pressure reducing valve (9) and the pressure retaining valve (13);
an electric proportional pressure reducing valve (9) and a pressure retaining valve (13) which are connected in series are arranged between the speed regulating valve group (8) and the chain clamp, and the clamping pressure of the injection head chain is controlled through the electric proportional pressure reducing valve (9) and the pressure retaining valve (13).
6. The coiled tubing equipment electrical control fluid automatic control system of claim 5, characterized in that: the injection head brake and the roller brake have logic control, and the injection head can be controlled only after the brakes are released simultaneously;
the chain clamping is divided into an upper path control, a middle path control and a lower path control, the three path control is provided with an independent pressure retaining valve (13), and the chain clamping can be controlled manually or automatically.
7. The automatic control system of the coiled tubing equipment electronic control fluid according to claim 1, characterized in that: the blowout prevention box control system comprises a constant-pressure variable pump (14), a safety valve (15), an energy accumulator (16), a needle valve (17), an electric proportional pressure reducing valve (9), a switch electromagnetic directional valve (18) and a pressure maintaining electromagnetic valve (19).
8. The coiled tubing equipment electrical control fluid automatic control system of claim 7, characterized in that: the two blowout prevention boxes are provided with hydraulic power through a constant-pressure variable pump (14) so as to open or close the two blowout prevention boxes, and the two blowout prevention boxes are independently controlled so that the two blowout prevention boxes do not work at the same time;
an electric proportional pressure reducing valve (9) and a switch electromagnetic directional valve (18) which are connected in series are arranged on control pipelines of a constant-pressure variable pump (14) and two blowout prevention boxes, the switch electromagnetic directional valve (18) controls the blowout prevention boxes to be loosened or clamped through power-on or power-off, and a pressure maintaining electromagnetic valve (19) is also arranged on a pipeline which controls the blowout prevention boxes to be clamped so that the blowout prevention boxes can maintain pressure in a clamping state;
the constant-pressure variable pump (14) is provided with a safety valve (15), an energy accumulator (16) and a needle valve (17) on a control pipeline of the two blowout prevention boxes, the energy accumulator (16) can provide extra power for the system under the condition that the constant-pressure variable pump (14) fails, the needle valve (17) unloads the system, and the safety valve (15) protects the system from overpressure.
9. The automatic control system of the coiled tubing equipment electronic control fluid according to claim 1, characterized in that: the oil pipe roller control system comprises an electric control variable plunger pump (23), an electric proportional overflow valve (2), a filter (4), a flush valve (3), a roller motor (26) and a second brake (25).
10. The coiled tubing equipment electrical control fluid automatic control system of claim 9, characterized in that: the electric control variable plunger pump (23) is connected with the roller motor (26) to form a closed loop, the filter (4) and the flushing valve (3) are connected in series at two sides of the closed loop, and the electric proportional overflow valve (2) is connected in series between the outlet of the electric control variable plunger pump (23) and the filter (4);
the electric proportional overflow valve (2) is used for adjusting the working pressure of the system, the filter (4) is used for filtering hydraulic oil on loops on two sides, and the flushing valve (3) is used for replacing part of hot oil to reduce the temperature of the hydraulic oil of the system.
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Effective date of registration: 20230816 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 434020 Longshan Temple Street, Jingzhou District, Jingzhou, Hubei Patentee before: SINOPEC SIJI PETROLEUM MACHINERY Co.,Ltd. Patentee before: SINOPEC OILFIELD EQUIPMENT Corp. |